How do we know that Jesus is the appointed Savior?

Jesus is shown to be the appointed Savior through His fulfillment of the law and the prophets, as mentioned in passages like Hebrews 2:14-17. He took on human flesh to be a merciful and faithful High Priest, making reconciliation for the sins of His people. His sacrificial death on the cross satisfied God's justice, fulfilling the requirement for salvation, which is emphasized in passages like Ephesians 1:7 that speak of our redemption through His blood. This demonstrates His appointment by God the Father to save His people.